mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-10-15 05:43:33 +08:00
Import USB and USB WLAN from FreeBSD.
This commit is contained in:
Christian Mauderer
651
freebsd/sys/dev/usb/net/usb_ethernet.c
Normal file
651
freebsd/sys/dev/usb/net/usb_ethernet.c
Normal file
@@ -0,0 +1,651 @@
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||||
#include <machine/rtems-bsd-kernel-space.h>
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/* $FreeBSD$ */
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||||
/*-
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* Copyright (c) 2009 Andrew Thompson (thompsa@FreeBSD.org)
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
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||||
*/
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||||
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||||
#include <sys/cdefs.h>
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||||
__FBSDID("$FreeBSD$");
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||||
|
||||
#include <rtems/bsd/sys/param.h>
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||||
#include <sys/systm.h>
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||||
#include <sys/bus.h>
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||||
#include <sys/condvar.h>
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||||
#include <sys/kernel.h>
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||||
#include <rtems/bsd/sys/lock.h>
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||||
#include <sys/malloc.h>
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||||
#include <sys/mbuf.h>
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||||
#include <sys/module.h>
|
||||
#include <sys/mutex.h>
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||||
#include <sys/socket.h>
|
||||
#include <sys/sockio.h>
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||||
#include <sys/sysctl.h>
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||||
#include <sys/sx.h>
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||||
|
||||
#include <net/if.h>
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||||
#include <net/if_var.h>
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#include <net/ethernet.h>
|
||||
#include <net/if_types.h>
|
||||
#include <net/if_media.h>
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||||
#include <net/if_vlan_var.h>
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||||
|
||||
#include <dev/mii/mii.h>
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||||
#include <dev/mii/miivar.h>
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||||
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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||||
#include <dev/usb/usb_process.h>
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#include <dev/usb/net/usb_ethernet.h>
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static SYSCTL_NODE(_net, OID_AUTO, ue, CTLFLAG_RD, 0,
|
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"USB Ethernet parameters");
|
||||
|
||||
#define UE_LOCK(_ue) mtx_lock((_ue)->ue_mtx)
|
||||
#define UE_UNLOCK(_ue) mtx_unlock((_ue)->ue_mtx)
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||||
#define UE_LOCK_ASSERT(_ue, t) mtx_assert((_ue)->ue_mtx, t)
|
||||
|
||||
MODULE_DEPEND(uether, usb, 1, 1, 1);
|
||||
MODULE_DEPEND(uether, miibus, 1, 1, 1);
|
||||
|
||||
static struct unrhdr *ueunit;
|
||||
|
||||
static usb_proc_callback_t ue_attach_post_task;
|
||||
static usb_proc_callback_t ue_promisc_task;
|
||||
static usb_proc_callback_t ue_setmulti_task;
|
||||
static usb_proc_callback_t ue_ifmedia_task;
|
||||
static usb_proc_callback_t ue_tick_task;
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static usb_proc_callback_t ue_start_task;
|
||||
static usb_proc_callback_t ue_stop_task;
|
||||
|
||||
static void ue_init(void *);
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||||
static void ue_start(struct ifnet *);
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||||
static int ue_ifmedia_upd(struct ifnet *);
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||||
static void ue_watchdog(void *);
|
||||
|
||||
/*
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||||
* Return values:
|
||||
* 0: success
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||||
* Else: device has been detached
|
||||
*/
|
||||
uint8_t
|
||||
uether_pause(struct usb_ether *ue, unsigned int _ticks)
|
||||
{
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||||
if (usb_proc_is_gone(&ue->ue_tq)) {
|
||||
/* nothing to do */
|
||||
return (1);
|
||||
}
|
||||
usb_pause_mtx(ue->ue_mtx, _ticks);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_queue_command(struct usb_ether *ue,
|
||||
usb_proc_callback_t *fn,
|
||||
struct usb_proc_msg *t0, struct usb_proc_msg *t1)
|
||||
{
|
||||
struct usb_ether_cfg_task *task;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
if (usb_proc_is_gone(&ue->ue_tq)) {
|
||||
return; /* nothing to do */
|
||||
}
|
||||
/*
|
||||
* NOTE: The task cannot get executed before we drop the
|
||||
* "sc_mtx" mutex. It is safe to update fields in the message
|
||||
* structure after that the message got queued.
|
||||
*/
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task = (struct usb_ether_cfg_task *)
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||||
usb_proc_msignal(&ue->ue_tq, t0, t1);
|
||||
|
||||
/* Setup callback and self pointers */
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task->hdr.pm_callback = fn;
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task->ue = ue;
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|
||||
/*
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||||
* Start and stop must be synchronous!
|
||||
*/
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||||
if ((fn == ue_start_task) || (fn == ue_stop_task))
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usb_proc_mwait(&ue->ue_tq, t0, t1);
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||||
}
|
||||
|
||||
struct ifnet *
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||||
uether_getifp(struct usb_ether *ue)
|
||||
{
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||||
return (ue->ue_ifp);
|
||||
}
|
||||
|
||||
struct mii_data *
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||||
uether_getmii(struct usb_ether *ue)
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{
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return (device_get_softc(ue->ue_miibus));
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}
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void *
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uether_getsc(struct usb_ether *ue)
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{
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return (ue->ue_sc);
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}
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static int
|
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ue_sysctl_parent(SYSCTL_HANDLER_ARGS)
|
||||
{
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||||
struct usb_ether *ue = arg1;
|
||||
const char *name;
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|
||||
name = device_get_nameunit(ue->ue_dev);
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||||
return SYSCTL_OUT_STR(req, name);
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||||
}
|
||||
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||||
int
|
||||
uether_ifattach(struct usb_ether *ue)
|
||||
{
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||||
int error;
|
||||
|
||||
/* check some critical parameters */
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||||
if ((ue->ue_dev == NULL) ||
|
||||
(ue->ue_udev == NULL) ||
|
||||
(ue->ue_mtx == NULL) ||
|
||||
(ue->ue_methods == NULL))
|
||||
return (EINVAL);
|
||||
|
||||
error = usb_proc_create(&ue->ue_tq, ue->ue_mtx,
|
||||
device_get_nameunit(ue->ue_dev), USB_PRI_MED);
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||||
if (error) {
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||||
device_printf(ue->ue_dev, "could not setup taskqueue\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* fork rest of the attach code */
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||||
UE_LOCK(ue);
|
||||
ue_queue_command(ue, ue_attach_post_task,
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||||
&ue->ue_sync_task[0].hdr,
|
||||
&ue->ue_sync_task[1].hdr);
|
||||
UE_UNLOCK(ue);
|
||||
|
||||
error:
|
||||
return (error);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_attach_post_task(struct usb_proc_msg *_task)
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||||
{
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struct usb_ether_cfg_task *task =
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(struct usb_ether_cfg_task *)_task;
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||||
struct usb_ether *ue = task->ue;
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struct ifnet *ifp;
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int error;
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char num[14]; /* sufficient for 32 bits */
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||||
|
||||
/* first call driver's post attach routine */
|
||||
ue->ue_methods->ue_attach_post(ue);
|
||||
|
||||
UE_UNLOCK(ue);
|
||||
|
||||
ue->ue_unit = alloc_unr(ueunit);
|
||||
usb_callout_init_mtx(&ue->ue_watchdog, ue->ue_mtx, 0);
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sysctl_ctx_init(&ue->ue_sysctl_ctx);
|
||||
|
||||
error = 0;
|
||||
CURVNET_SET_QUIET(vnet0);
|
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ifp = if_alloc(IFT_ETHER);
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if (ifp == NULL) {
|
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device_printf(ue->ue_dev, "could not allocate ifnet\n");
|
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goto fail;
|
||||
}
|
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|
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ifp->if_softc = ue;
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if_initname(ifp, "ue", ue->ue_unit);
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if (ue->ue_methods->ue_attach_post_sub != NULL) {
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ue->ue_ifp = ifp;
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error = ue->ue_methods->ue_attach_post_sub(ue);
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} else {
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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if (ue->ue_methods->ue_ioctl != NULL)
|
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ifp->if_ioctl = ue->ue_methods->ue_ioctl;
|
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else
|
||||
ifp->if_ioctl = uether_ioctl;
|
||||
ifp->if_start = ue_start;
|
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ifp->if_init = ue_init;
|
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IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
|
||||
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
|
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IFQ_SET_READY(&ifp->if_snd);
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ue->ue_ifp = ifp;
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if (ue->ue_methods->ue_mii_upd != NULL &&
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ue->ue_methods->ue_mii_sts != NULL) {
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/* device_xxx() depends on this */
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mtx_lock(&Giant);
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error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
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ue_ifmedia_upd, ue->ue_methods->ue_mii_sts,
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BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0);
|
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mtx_unlock(&Giant);
|
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}
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}
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if (error) {
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device_printf(ue->ue_dev, "attaching PHYs failed\n");
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goto fail;
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}
|
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if_printf(ifp, "<USB Ethernet> on %s\n", device_get_nameunit(ue->ue_dev));
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||||
ether_ifattach(ifp, ue->ue_eaddr);
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/* Tell upper layer we support VLAN oversized frames. */
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if (ifp->if_capabilities & IFCAP_VLAN_MTU)
|
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ifp->if_hdrlen = sizeof(struct ether_vlan_header);
|
||||
|
||||
CURVNET_RESTORE();
|
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snprintf(num, sizeof(num), "%u", ue->ue_unit);
|
||||
ue->ue_sysctl_oid = SYSCTL_ADD_NODE(&ue->ue_sysctl_ctx,
|
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&SYSCTL_NODE_CHILDREN(_net, ue),
|
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OID_AUTO, num, CTLFLAG_RD, NULL, "");
|
||||
SYSCTL_ADD_PROC(&ue->ue_sysctl_ctx,
|
||||
SYSCTL_CHILDREN(ue->ue_sysctl_oid), OID_AUTO,
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||||
"%parent", CTLTYPE_STRING | CTLFLAG_RD, ue, 0,
|
||||
ue_sysctl_parent, "A", "parent device");
|
||||
|
||||
UE_LOCK(ue);
|
||||
return;
|
||||
|
||||
fail:
|
||||
CURVNET_RESTORE();
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free_unr(ueunit, ue->ue_unit);
|
||||
if (ue->ue_ifp != NULL) {
|
||||
if_free(ue->ue_ifp);
|
||||
ue->ue_ifp = NULL;
|
||||
}
|
||||
UE_LOCK(ue);
|
||||
return;
|
||||
}
|
||||
|
||||
void
|
||||
uether_ifdetach(struct usb_ether *ue)
|
||||
{
|
||||
struct ifnet *ifp;
|
||||
|
||||
/* wait for any post attach or other command to complete */
|
||||
usb_proc_drain(&ue->ue_tq);
|
||||
|
||||
/* read "ifnet" pointer after taskqueue drain */
|
||||
ifp = ue->ue_ifp;
|
||||
|
||||
if (ifp != NULL) {
|
||||
|
||||
/* we are not running any more */
|
||||
UE_LOCK(ue);
|
||||
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
|
||||
UE_UNLOCK(ue);
|
||||
|
||||
/* drain any callouts */
|
||||
usb_callout_drain(&ue->ue_watchdog);
|
||||
|
||||
/* detach miibus */
|
||||
if (ue->ue_miibus != NULL) {
|
||||
mtx_lock(&Giant); /* device_xxx() depends on this */
|
||||
device_delete_child(ue->ue_dev, ue->ue_miibus);
|
||||
mtx_unlock(&Giant);
|
||||
}
|
||||
|
||||
/* detach ethernet */
|
||||
ether_ifdetach(ifp);
|
||||
|
||||
/* free interface instance */
|
||||
if_free(ifp);
|
||||
|
||||
/* free sysctl */
|
||||
sysctl_ctx_free(&ue->ue_sysctl_ctx);
|
||||
|
||||
/* free unit */
|
||||
free_unr(ueunit, ue->ue_unit);
|
||||
}
|
||||
|
||||
/* free taskqueue, if any */
|
||||
usb_proc_free(&ue->ue_tq);
|
||||
}
|
||||
|
||||
uint8_t
|
||||
uether_is_gone(struct usb_ether *ue)
|
||||
{
|
||||
return (usb_proc_is_gone(&ue->ue_tq));
|
||||
}
|
||||
|
||||
void
|
||||
uether_init(void *arg)
|
||||
{
|
||||
|
||||
ue_init(arg);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_init(void *arg)
|
||||
{
|
||||
struct usb_ether *ue = arg;
|
||||
|
||||
UE_LOCK(ue);
|
||||
ue_queue_command(ue, ue_start_task,
|
||||
&ue->ue_sync_task[0].hdr,
|
||||
&ue->ue_sync_task[1].hdr);
|
||||
UE_UNLOCK(ue);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_start_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
ue->ue_methods->ue_init(ue);
|
||||
|
||||
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
||||
return;
|
||||
|
||||
if (ue->ue_methods->ue_tick != NULL)
|
||||
usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_stop_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
usb_callout_stop(&ue->ue_watchdog);
|
||||
|
||||
ue->ue_methods->ue_stop(ue);
|
||||
}
|
||||
|
||||
void
|
||||
uether_start(struct ifnet *ifp)
|
||||
{
|
||||
|
||||
ue_start(ifp);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_start(struct ifnet *ifp)
|
||||
{
|
||||
struct usb_ether *ue = ifp->if_softc;
|
||||
|
||||
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
||||
return;
|
||||
|
||||
UE_LOCK(ue);
|
||||
ue->ue_methods->ue_start(ue);
|
||||
UE_UNLOCK(ue);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_promisc_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
|
||||
ue->ue_methods->ue_setpromisc(ue);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_setmulti_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
|
||||
ue->ue_methods->ue_setmulti(ue);
|
||||
}
|
||||
|
||||
int
|
||||
uether_ifmedia_upd(struct ifnet *ifp)
|
||||
{
|
||||
|
||||
return (ue_ifmedia_upd(ifp));
|
||||
}
|
||||
|
||||
static int
|
||||
ue_ifmedia_upd(struct ifnet *ifp)
|
||||
{
|
||||
struct usb_ether *ue = ifp->if_softc;
|
||||
|
||||
/* Defer to process context */
|
||||
UE_LOCK(ue);
|
||||
ue_queue_command(ue, ue_ifmedia_task,
|
||||
&ue->ue_media_task[0].hdr,
|
||||
&ue->ue_media_task[1].hdr);
|
||||
UE_UNLOCK(ue);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_ifmedia_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
|
||||
ue->ue_methods->ue_mii_upd(ifp);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_watchdog(void *arg)
|
||||
{
|
||||
struct usb_ether *ue = arg;
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
|
||||
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
||||
return;
|
||||
|
||||
ue_queue_command(ue, ue_tick_task,
|
||||
&ue->ue_tick_task[0].hdr,
|
||||
&ue->ue_tick_task[1].hdr);
|
||||
|
||||
usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
|
||||
}
|
||||
|
||||
static void
|
||||
ue_tick_task(struct usb_proc_msg *_task)
|
||||
{
|
||||
struct usb_ether_cfg_task *task =
|
||||
(struct usb_ether_cfg_task *)_task;
|
||||
struct usb_ether *ue = task->ue;
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
|
||||
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
||||
return;
|
||||
|
||||
ue->ue_methods->ue_tick(ue);
|
||||
}
|
||||
|
||||
int
|
||||
uether_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
|
||||
{
|
||||
struct usb_ether *ue = ifp->if_softc;
|
||||
struct ifreq *ifr = (struct ifreq *)data;
|
||||
struct mii_data *mii;
|
||||
int error = 0;
|
||||
|
||||
switch (command) {
|
||||
case SIOCSIFFLAGS:
|
||||
UE_LOCK(ue);
|
||||
if (ifp->if_flags & IFF_UP) {
|
||||
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
||||
ue_queue_command(ue, ue_promisc_task,
|
||||
&ue->ue_promisc_task[0].hdr,
|
||||
&ue->ue_promisc_task[1].hdr);
|
||||
else
|
||||
ue_queue_command(ue, ue_start_task,
|
||||
&ue->ue_sync_task[0].hdr,
|
||||
&ue->ue_sync_task[1].hdr);
|
||||
} else {
|
||||
ue_queue_command(ue, ue_stop_task,
|
||||
&ue->ue_sync_task[0].hdr,
|
||||
&ue->ue_sync_task[1].hdr);
|
||||
}
|
||||
UE_UNLOCK(ue);
|
||||
break;
|
||||
case SIOCADDMULTI:
|
||||
case SIOCDELMULTI:
|
||||
UE_LOCK(ue);
|
||||
ue_queue_command(ue, ue_setmulti_task,
|
||||
&ue->ue_multi_task[0].hdr,
|
||||
&ue->ue_multi_task[1].hdr);
|
||||
UE_UNLOCK(ue);
|
||||
break;
|
||||
case SIOCGIFMEDIA:
|
||||
case SIOCSIFMEDIA:
|
||||
if (ue->ue_miibus != NULL) {
|
||||
mii = device_get_softc(ue->ue_miibus);
|
||||
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
|
||||
} else
|
||||
error = ether_ioctl(ifp, command, data);
|
||||
break;
|
||||
default:
|
||||
error = ether_ioctl(ifp, command, data);
|
||||
break;
|
||||
}
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
uether_modevent(module_t mod, int type, void *data)
|
||||
{
|
||||
|
||||
switch (type) {
|
||||
case MOD_LOAD:
|
||||
ueunit = new_unrhdr(0, INT_MAX, NULL);
|
||||
break;
|
||||
case MOD_UNLOAD:
|
||||
break;
|
||||
default:
|
||||
return (EOPNOTSUPP);
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
static moduledata_t uether_mod = {
|
||||
"uether",
|
||||
uether_modevent,
|
||||
0
|
||||
};
|
||||
|
||||
struct mbuf *
|
||||
uether_newbuf(void)
|
||||
{
|
||||
struct mbuf *m_new;
|
||||
|
||||
m_new = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
|
||||
if (m_new == NULL)
|
||||
return (NULL);
|
||||
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
|
||||
|
||||
m_adj(m_new, ETHER_ALIGN);
|
||||
return (m_new);
|
||||
}
|
||||
|
||||
int
|
||||
uether_rxmbuf(struct usb_ether *ue, struct mbuf *m,
|
||||
unsigned int len)
|
||||
{
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
/* finalize mbuf */
|
||||
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
||||
m->m_pkthdr.rcvif = ifp;
|
||||
m->m_pkthdr.len = m->m_len = len;
|
||||
|
||||
/* enqueue for later when the lock can be released */
|
||||
_IF_ENQUEUE(&ue->ue_rxq, m);
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
uether_rxbuf(struct usb_ether *ue, struct usb_page_cache *pc,
|
||||
unsigned int offset, unsigned int len)
|
||||
{
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
struct mbuf *m;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
if (len < ETHER_HDR_LEN || len > MCLBYTES - ETHER_ALIGN)
|
||||
return (1);
|
||||
|
||||
m = uether_newbuf();
|
||||
if (m == NULL) {
|
||||
if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
|
||||
return (ENOMEM);
|
||||
}
|
||||
|
||||
usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
|
||||
|
||||
/* finalize mbuf */
|
||||
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
|
||||
m->m_pkthdr.rcvif = ifp;
|
||||
m->m_pkthdr.len = m->m_len = len;
|
||||
|
||||
/* enqueue for later when the lock can be released */
|
||||
_IF_ENQUEUE(&ue->ue_rxq, m);
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
uether_rxflush(struct usb_ether *ue)
|
||||
{
|
||||
struct ifnet *ifp = ue->ue_ifp;
|
||||
struct mbuf *m;
|
||||
|
||||
UE_LOCK_ASSERT(ue, MA_OWNED);
|
||||
|
||||
for (;;) {
|
||||
_IF_DEQUEUE(&ue->ue_rxq, m);
|
||||
if (m == NULL)
|
||||
break;
|
||||
|
||||
/*
|
||||
* The USB xfer has been resubmitted so its safe to unlock now.
|
||||
*/
|
||||
UE_UNLOCK(ue);
|
||||
ifp->if_input(ifp, m);
|
||||
UE_LOCK(ue);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* USB net drivers are run by DRIVER_MODULE() thus SI_SUB_DRIVERS,
|
||||
* SI_ORDER_MIDDLE. Run uether after that.
|
||||
*/
|
||||
DECLARE_MODULE(uether, uether_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
|
||||
MODULE_VERSION(uether, 1);
|
||||
Reference in New Issue
Block a user